Frederick tossed a number cube and then tossed a coin 100 times as part of an experiment. He recorded the number of times he tos
sed a six or tossed a number other than six, and the number of times the coin landed on heads or tails. The results are listed in the table below.
Based on these results, what was the probability that Frederick’s coin landed on tails after he tossed a six?
A.3/25
B. 31/100
C. 12/31
D. 69/100
Based on these results, what was the probability that Frederick’s coin landed on tails after he tossed a six?
A.3/25
B. 31/100
C. 12/31
D. 69/100
2 answers:
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Given :
To Find :
All real value solution of given equation.
Solution :
Simplifying given equation, we get :
sec x( sec x + 2 ) = 0
sec x = 0 and (sec x + 2) = 0
For, sec x = 0 :
x = not defined.
For, (sec x + 2) = 0 :
cos x = -1/2
x = cos⁻¹( -1/2 ) = 2π/3
Therefore, general solution is ( 2nπ ± 2π/3 ), n ∈ Z⁺ .